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Courses
Service
- Department Chair
- Curator, Ohio University
Paleobotanical Herbarium (OUPH)
- Institutional
Representative, National Science Collections Alliance
Research Program
Summary
Studies of fossil and
living land plants are directed toward a fuller understanding of phylogeny
and evolution. These are explored using data from morphological, anatomical, ultrastructural, developmental, and molecular
characters. Evaluations of ontogeny, reproductive biology, and organismal interactions are emphasized in interpreting
development of the modern flora within the context of evolutionary ecology.
Research projects on a
wide range of organismal biology topics are
available for both undergraduate and graduate students who wish to become
practicing scientists. These studies often focus on fossil plants, but
structure, growth and development and physiology studies of living plants
also are conducted. Anyone interested in doing original research and/or
conducting his or her PBIO 404 undergraduate research in organismal
botany, may contact Dr. Rothwell for a list and explanation of available
topics.
Selected References
- Rothwell, G.W. and E.E. Karrfalt. 2008. Growth, development, and systematics
of ferns: Does Botrychium s.l. (Ophioglossales) really produce
secondary xylem? American Journal of Botany, in press.
- Rothwell, G.W. and R.A. Stockey. 2008. Phylogeny and evolution of ferns: a paleontological perspective. P. x-x. In: T.A. Rankor and Haufler, C.H., eds. The biology and evolution of ferns and lycophytes. Cambridge University Press, in press.
- Rothwell, G.W., H. Sanders, S.E.
Wyatt and S. Lev-Yadun 2008. A fossil record
for growth regulation; the role of auxin in wood
evolution. Annals of the Missouri
Botanical Garden,
in press.
- Jud, N.A., G.W. Rothwell
and R.A. Stockey. 2008. Todea from the Lower
Cretaceous of western North America:
implications for the phylogeny and evolution of modern Osmundaceae. American Journal of Botany 95: 330-339.
- Tomescu, A. M. F., G.W. Rothwell
and R. Honegger. 2008. Earliest fossil
record of bacterial-cyanobacterial mat
consortia: the early Silurian Passage Creek biota (440 Ma, Virginia, USA).
Geobiology 6: 120-124.
- Tomescu, A. M. F., G.W. Rothwell
and M.L. Trivett. 2008. Reiterative
growth in the complex adaptive architecture of the Paleozoic
(Pennsylvanian) filicalean fern Kaplanopteris clavata.
Plant Systematics and Evolution 270: 209-216.
- Johnson, K., G. Mapes, L. Doguzhaeva and G.W. Rothwell.
2007. Cardiocarpus angarensis sp. nov., and the Late Paleozoic
diversity of Angaran coniferophytes.
Botanical Journal of the Linnean Society 155:
297-305.
- Stockey,
R.A. , G.W. Rothwell
and K.R. Johnson. 2007. Cobbania corrugata (Lesquereux)
gen. et comb. nov. (Araceae): a
floating aquatic monocot from the Upper Cretaceous of North America.
American Journal of Botany 94: 609-624.
- Rothwell,
G. W., G. Mapes, J. Hilton, and N.
Hollingsworth. 2007. Anatomy of cheirolepidiaceous
pollen cones; Classostrobus crossii sp. nov. International Journal of Coal Geology 69: 55-57.
- Sanders, H., G.W. Rothwell and S.
Wyatt. 2007. A paleontological context for the
developmental mechanisms of evolution. International
Journal of Plant Sciences 168: 719-728.
- Bateman, R.M., P. Kenrick, and
G.W. Rothwell. 2007. Do eligulate
herbarcous lycopsids
occur in Palaeozoic strata? Hestia eremosa
gen. et sp. Nov. from the Dinantian
of Oxroad Bay, East Lothian, Scotland. Review of Palaeobotany and Palynology
144: 323-335.
Text Book
- Stewart, W.N. and G.W. Rothwell. 1993. Paleobotany
and the evolution of plants. Cambridge
University Press,
521 pp.
Faculty Research Focus
Areas
Current or Recent
Student Research Projects
- Alternative pathways of
gene regulation in the evolution of leaves in ferns and seed plants.
- Evolutionary radiation of
modern Equisetum in the Lower
Cretaceous.
- Structural finger prints
for developmental regulatory pathways in fossil plants
- Polar auxin
regulation in the architectural diversity of isoetalean
lycophytes.
- Reconstructing a Pennsylvanian
age fossil conifers
- Permian cardiocarpalean
ovules from the Angara Province of Russia
- Conifer phylogeny
- The most ancient complex
land organisms
- Euphyllophyte phylogeny
- Lower Cretaceous conifer
pollen cones from British Columbia, Canada
- The first fossil evidence
for the fern Todea
- Anatomy of Lower Cretaceous
Equisetum
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